Abstract

We investigated the surface physicochemical properties of biomedical materials (made from polylactic acid (PLA), hydroxyapatite (HA), and composites based on PLA and HA with the mass ratio of 80/20 and 60/40, respectively) modified by C⁺ and Ag²⁺ ion implantation at the dose of 1 × 10¹⁶ cm^–2 at the accelerating voltage of 20 kV. It was found that ion implantation leads to greater crystallite size and crystallinity of materials, larger pore volume in surface layers, enhanced surface conductivity, and reduced microhardness of materials.

中文翻译：

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Ag 2+和C +离子注入对聚乳酸，羟基磷灰石及其复合材料表面理化性质的影响

摘要

我们研究了生物医学材料（由聚乳酸（PLA），羟基磷灰石（HA）以及质量比分别为80/20和60/40的PLA和HA制成的复合材料制成）的表面物理化学性质，并用C ⁺和在20 kV的加速电压下，以1×10 ¹⁶ cm ^–2的剂量注入Ag ²⁺。发现离子注入导致更大的微晶尺寸和材料的结晶度，表面层中更大的孔体积，增强的表面电导率以及降低的材料的显微硬度。